Recalibrating speedometer

[kokanee king]

Can anyone explain the procedure on how to recalibrate the speedometer after installing 315/70/17 BF Goodrich tires? I'd like to have a basic knowledge before I take it to my dealer. My rig is a 2003 6 speed 4x4, HO diesel of course.

 

[GatorRam]

It worked for my dads 03. You need to find someone with a DRB3 tool. If I remember correctly you scroll down to the ABS portion and then you will see a "revs per mile". Under that there should be some stock tire sizes and an option to put in you own up to 900. A BFG KO 315/70R17 runs at 601 revs per mile. I hope this helps!



Adam